I was there 2 weeks ago - £26 return from Manchester with Ryanair. I've been to Krakow, Warsaw and Gdansk but liked Wroclaw (pronounced Vrotslarf) more....fantastic 4 days there but beware a lot of museums/galleries are closed Mondays if that's important to you.
Stay in or v close to the old town (Stare Miasto) then most things are walkable though the tram network is fantastic (and free for over 65s). There's a huge student population so plenty of bars and the area around the main square (Rynek) is very busy at night - and just off the square are 24 hour florist stalls!. The little tourist info office is on Rynek.
Go on a free walking tour to get a sense of the place
https://freewalkingtour.com/wroclaw/. As I was out of season only the old town one was on. At the end of the tour you get a free map with suggested places to visit
Go to the part restaurant / part living museum Konspira
https://restauracjakonspira.pl/en/homepage-4/ and take the menu as souvenir
Vinyl Cafe was a cool place for drinks and Herbaciania Targowa good for tea/coffee and cake
I'm interested in political events in the city and country 1939 to date, especially their role in the Solidarity movement. A great place to see that is
https://zajezdnia.org/en/zajezdnia which is a lot more interesting than it looks on the website
This was a quirky thing to visit
https://panoramaraclawicka.pl/ and the ticket gives you free entry into other places including the Four Dome Pavilion
https://mnwr.pl/en/category/branches/the-four-domes-pavilion/ next to which is 'The Needle' and the Centennial Hall
https://whc.unesco.org/en/list/1165/
General tourist info here
https://visitwroclaw.eu/en and specific guides downloadable here
https://visitwroclaw.eu/en/tourist-fairs
Life in Wroclaw has changed with Russias war in Ukraine. We are describing the current situation in Wroclaw on our city blog.
www.wroclawguide.com
Here's a more detailed free guide to download, slightly out of date but basic info is the same
https://www.inyourpocket.com/wroclaw-about
I'm going to Poznan next